Asymmetric whispering gallery microcavity lasing suppresses mode competition to deliver tunable microwave signals with stable spacing and narrow linewidth.
A microwave cavity synchronizes large-area magnetic oscillations, boosting spin torque oscillator power while narrowing linewidths.
Coherent low-power MASER probing records neural activity and enables precise deep-brain modulation without invasive electrodes or rTMS limits.
Nitrogen-implanted diamond thin films enable room-temperature MASER arrays that avoid cryogenic cooling while producing coherent continuous-wave beams.
Stress-tuned birefringence in a polarization-maintaining fiber grating enables dual-frequency laser beating for tunable narrow-linewidth microwaves.